7y+x-1=90

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Solution for 7y+x-1=90 equation:


Simplifying
7y + x + -1 = 90

Reorder the terms:
-1 + x + 7y = 90

Solving
-1 + x + 7y = 90

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + x + 1 + 7y = 90 + 1

Reorder the terms:
-1 + 1 + x + 7y = 90 + 1

Combine like terms: -1 + 1 = 0
0 + x + 7y = 90 + 1
x + 7y = 90 + 1

Combine like terms: 90 + 1 = 91
x + 7y = 91

Add '-7y' to each side of the equation.
x + 7y + -7y = 91 + -7y

Combine like terms: 7y + -7y = 0
x + 0 = 91 + -7y
x = 91 + -7y

Simplifying
x = 91 + -7y

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